I asked Abu Abdullah (as) about a man who brought a sacrificial camel, and it broke down before reaching its designated place or was overtaken by death or destruction. Imam (as) said: "He should slaughter it if he is able and smear its shoe, which was used to mark it, with its blood so that whoever passes by it knows it has been slaughtered. They may eat from its meat if they wish. If the hady (sacrificial offering) is guaranteed, then he must replace it by purchasing another in its place if it breaks down or perishes. A guaranteed offering is one that is obligatory upon him due to a vow or other obligations. But if it is not guaranteed, and it is merely something he undertook voluntarily, then he is not obligated to replace it unless he wishes to do so voluntarily."